首映 (shǒuyìng) means "premiere" or "first screening," referring to the initial public showing of a film. It is often used in compound phrases like 首映周末 (premiere weekend) when discussing box office performance.
这部电影的首映是在上海举行的。
Zhè bù diànyǐng de shǒuyìng shì zài Shànghǎi jǔxíng de.
The premiere of this film was held in Shanghai.
首映当天,很多明星都来了。
Shǒuyìng dāngtiān, hěn duō míngxīng dōu lái le.
On the day of the premiere, many celebrities came.
这部片子首映周末的票房就破了三亿。
Zhè bù piànzi shǒuyìng zhōumò de piàofáng jiù pò le sān yì.
This film broke 300 million at the box office on its opening weekend.